Hi it's normal, ask her not use mobile phone or TV after 8 pm. Drinking warm milk with gulkand will help.

Please tell in detail what is the problem she is facing slight backache heaviness in abdomen is normal is there anything else than please communicate here do not worry

<span style="color:#3B5998;"><b><a href="http://app.babychakra.com/article/2774">Sleeping Positions During Pregnancy To Help Reduce The Discomfort</a></b></span>

It's always good to sleep on the left side but she can change sides.. please go through vthe articles i am sharing..