She's overall stronger now.
The W nerfs have made building tanky on Soraka difficult. She does so much damage to herself for a tiny heal early game. Sorakas before used to work so hard to get Warmog's heart because of how broken it was on her. Now people are going for HP Regen and AP instead of stacking up health. You should look at your build. May I ask what it is? I too had so much trouble at first with the changes, but I switched up my build and I'm winning a lot of my games as her now.
I'm also happy we have more variety. More and more Sorakas are upgrading Q second, instead of last like before. It's no longer a useless ability until late game. There's reasons for you to put out Qs now. E is still really good too, so you base it around your preference or what's going on in game.
I'm actually really surprised Riot was able to cut out the unhealthy build most Sorakas were striving for while making her stronger. The changes aren't perfect, but so much better than I expected them to be.