Advice about my 12 week old please!!?

In the evening at about 7pm I bath and give my baby girl a bottle I try to settle her in her crib ( which is in our bedroom) but she is not happy until I take her downstairs where she falls asleep in her bouncer and then I take her upstairs when we are going to bed. This evening I really tried to settle her by shushing and calming her in the crib... eventually I had to take her downstairs and cuddle her due to crying and then put her in the comfy bouncer in the lounge with me where she settled and is now sleeping...advice please from other mums...is she too young to settle on her own in the room do I need to relax about it or should I continue to settle her in the crib..though its hard???