It should be possible to "enable" the phone again by entering the Apple ID associated with the iPhone, or by plugging it in to iTunes wether it has previously b

It should be possible to "enable" the phone again by entering the Apple ID associated with the iPhone, or by plugging it in to iTunes wether it has previously been synced with iTunes or not. Even then, unless she remembers the passcode the storage will still be encrypted and the data will not be able to be read by iTunes or anything else. Her best chance is to learn from this and have backups in place in the future, and try to crowdsource photos of her baby from family members. You can also checkout https://icloud.com https://icloud.com to see how many of her photos are backed up on icloud.