Huh, I thought the thread title "Heavy Lifting made me Bigger" and the OP lamenting her newly-gained muscles making her appear larger meant that the thread was about wanting to be small rather than large. And my POV is, I'd rather be strong, and if strong means bigger, bring it on. The only females I know who are able to get stronger while still looking small are girls who are natural ectomorphs/hard-gainers, and their strength stalls out at a certain point anyway. Whereas, it sounds based on her descriptions that the OP is a mesomorph, and I was only trying to point out that trying to remain small while gaining strength, as a mesomorph, just isn't going to happen. Your muscles are going to get visibly bigger because that is your body type. So, trying to remain small, as a mesomorph, means that you will also remain pretty weak. At some point you have to choose between strength and size.
And like, I'm not a behemoth, or anything--I have visible muscles and am strong for my size, but also have a conventionally sought-after shape. I'm no ballerina, but I have what would be termed "a good body". So gaining some visible muscle and getting a little bigger is really not the end of the world. You will still look bangin', as long as you're keeping the BF% semi-low.
If I'm off-base, apologies, but I just wanted to offer an alternate POV, because I existed way too long in that "chase the ballerina body" mindset and it just made me miserable and was impossible anyway. I look way better now that I've figured out I should lean into strength training and celebrate my muscular body type.