Senta is a Halfling.

Two braids are running through her long fiery hair which frames her pretty face. She wears studded leather, hooded sweatshirt and a skirt made of leather and rabbit hides. Her well-made boots are made out of leather too.

She is an expert in Stealth (Dex).
Halflings are brave, lucky, and can move thru the space of any creature that is a size larger than her.
Senta has a primal companion: Klaus, a magically summoned animal, usually in bear form (but can also be an aquatic or flying beast), that can take actions like attack on Senta's turn.
Her 2 most powerful utility spells are Healing spirit and Pass without a trace, and once a day she can cast Speak with animals for free.

Senta was taken in and trained by Elven Rangers, after she had to escape a raid on her village.

Goblins were attacking the village and kidnapped her father, a leatherworker, and Tori her friend.

She is convinced that they are still alive, kept as a slave and she felt ready to leave her Elven Family to finally look for them.

Senta arrives at the city of Waterdeep and finds that there are goblins who live
in the city just like other people. These goblins here are usually not
wild or vicious like the feral ones who attacked her village.

Senta meets the party, and they are all approached by Lady Esvele Rosznar to be hired to bring back home a lost family member.

The lady makes it clear that the House Roznar would owe them all a favour but also mentions that they would receive some valuable items before the start of the search.

Senta is very much interested in the favour. She feels that these nobles here are very powerful and have lots of contacts, and should be able to help her find her father and Tori. That would make it quicker and easier to know in which directions she needs to look.