3 yr old daughter with frequent cold and cough leading to ashtma

Age: 3 yrs.
Nature of illness: Since 8 months she is immune to cough as a result she has problem in breething.
Weight: 9 kgs.

She recently has suffered pneumonia on 5th Feb’2013 and hospitalized till 9th Feb’2013. Had took rest for another week after discharge and had gone to school on 18th Feb’2013 (today).
Past history: She is regularly suffering from cold and cough as a result she has difficulty in breething and frequency of the same is once in month and it is seasonal and occures sometimes twice in month. Till now we were following allopathy with antibiotics and stuffs but I do not see she is really cured from that.
She does not allow to wet her head during bath since she is really scared of same and starts crying if do so, Also we have noted for many occurrence of wetting her head causes the cough and if no immediate medicine provided to her than she had breething problem.
I require your help and suggestion with respect to Nat Sulp 6c in wet dose once every night before going to bed. Also, Ars Alb 30c once in day after breakfast and before leavin to school.
She is not cooperative in terms of taking steam, We still can force to take same if required. But do you have another way to provide steam since she is 3 yrs old kid.
I’m keen to know should I start your therapy immediately ? What is it that I’ll require you to report for better suggestion?

I'm also in communication with Joe Di Livera and based on his suggestion I'm following his prescribed treatment of Nat Sulp 6c twice in a day wet dose and EP 200 in wet dose twice in week. Also incase of situation where child is required to nebulize he suggested Ars. Alb. 200.
I'm following his treatement since past 3 weeks with no incident of cough noticed.

My daughter played with water on last friday (22nd Mar'2013) evening for around 15min where she wetted her cloths later she was dried and cloths changed. On Saturday she eat grapes (green) and same day evening she had waterry nose. Not so wattery but every 5min. she use to wipe it out. She continue wattery nose on Sunday as well. I had given her EP 200 one dosage as per the schedule time twice in a week. I had continued with Nat Supl 6c twice in day.
Today still she has wattery nose same as Sunday. The both days Saturday and Sunday weather was mild hot and cold winds.

My 6month old son has also catch cold and he is irritated when nose block.

The reason I'm posting here is to also get suggestion from other experience Homeopaths.
Request your help and let me know if you require any other information.