Saddle issues

Hello, i bought my partner a full sus mtb, I'm a cycle technician but unfortunately a man so I'm not entirely sure when it comes to solving issues with female anatomy and saddles, she claims it's caused alot of bruising, all I've seen so far is that a different shaped saddle with a cutout might fix this? Any help would be appreciated 🤕 Edit: I appreciate all your replies it's quite insightful, she loved riding but hated the positioning and saddle, I'll make size adjustments where possible and pic up chamois and padded shorts from work will probably order a few hundred saddles in and try them out, thank you all 🙏