I'm a teenager (less then 15) and my mom doesn't let me wudu when its Fajr and sometimes other praying times in the winter. Her reason behind this is because I can get sick (as in very sick; I think she afraid that I can get asthma since I have been brought in for that many times). She said that when my immune system gets stronger she'll allow me to do do wudu.
My question is: should I listen to her?
Parents are ranked very high and we should do our best to listen to them. Especially if it's our mother.
Or do it secretly? I told her about this and she even said she's willing to take the sin.