Avoid going to that part of going solo or female only group.please look for a travel agent or company or someone whom you know well and he or she is local
Pawna lake camping will be best suit for you as it a safe option for a solo woman traveler. The trip with accommodation and activities like lakeside cycling, bird watching, outdoor games are provided there by- https://banbanjara.com/tours/pawna-lake-camping
Delhi to Binsar will take about 9hours. There is a Club Mahindra resort just ahead of Binsar in a village called Basaula. From there Bageshwar is a 2 hours drive and from there Munsiyari is another 2 hours drive. Kumaon Mandal Vikas Nigam rest house at Munsiyari should be a good place to stay.
Wow, that was lovely! You really captured the spirit of the trek. Due to my friend's health, we had decided to opt for an easier trek (Deoriatal Chandrashila), but Kedartal will still be in my bucket list.
Seeing your pics made me envious, I will definitely try to go some time later.